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ESPHome

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Re: ESPHome

#141

Post by alright2565 »

hacknewslogin wrote: post #136

Is this a good time to ask about a project I would like to do? I have two 220v heaters in my garage, one on each floor. I'd like to turn one or both of them on from my phone. I'd also love temp sensors near each of them. So far I haven't found a good FOSS option to control a 220v 40A relay. Any suggestions what to use or how to set it up would appreciated.

Solid state relay is probably a bad idea with all the extra heat-sinking, extra cost, and chance of getting counterfeits.

I do this with ESPHome & a J115F21C12VDCS.9 relay (note only the NO side is rated for 40A resistive): https://i.imgur.com/MqqOkoY.png

Choose any of the temperature sensors here for air temperature sensing: https://esphome.io/

Configuration is so easy. For the sensor, just copy the config from here, for example: https://esphome.io/components/sensor/bme280. Add a gpio output (https://esphome.io/components/output/gpio) and a bang-bang climate controller (https://esphome.io/components/climate/bang_bang.html)

Here's the kicad footprint for that relay (Relay_SPDT_CIT-J115F2.kicad_mod) if you need it:

    (module Relay_SPDT_CIT-J115F2 (layer F.Cu) (tedit 611825E5)
      (descr https://www.citrelay.com/Catalog%20Pages/RelayCatalog/J115F2.pdf)
      (tags "Relay CIT J115F2 SPDT")
      (fp_text reference REF** (at 12.1666 -15.2) (layer F.SilkS)
        (effects (font (size 1 1) (thickness 0.15)))
      )
      (fp_text value Relay_SPDT_CIT-J115F2 (at 18.542 13.9 180) (layer F.Fab)
        (effects (font (size 1 1) (thickness 0.15)))
      )
      (fp_line (start -3.2 -14.1) (end 27.08 -14.1) (layer F.Fab) (width 0.1))
      (fp_line (start -3.96 -13.34) (end -3.96 11.94) (layer F.Fab) (width 0.1))
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      (fp_line (start -4.3 -14.3) (end 28.09 -14.3) (layer F.CrtYd) (width 0.05))
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      (fp_line (start 17.74 1.778) (end 19.304 1.778) (layer F.SilkS) (width 0.12))
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      (fp_line (start 23.876 2.54) (end 23.876 1.016) (layer F.SilkS) (width 0.12))
      (fp_line (start 19.304 1.016) (end 19.304 2.54) (layer F.SilkS) (width 0.12))
      (fp_circle (center 21.59 -2.54) (end 21.59 -2.413) (layer F.SilkS) (width 0.12))
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      (fp_line (start 5.334 -1.778) (end 5.334 -5.1054) (layer F.SilkS) (width 0.12))
      (fp_line (start -3.2 12.81) (end 27.08 12.81) (layer F.SilkS) (width 0.12))
      (fp_line (start 27.95 -13.34) (end 27.95 11.94) (layer F.SilkS) (width 0.12))
      (fp_line (start -4.07 -13.34) (end -4.07 11.94) (layer F.SilkS) (width 0.12))
      (fp_line (start -3.2 -14.21) (end 27.08 -14.21) (layer F.SilkS) (width 0.12))
      (fp_arc (start 27.08 -13.34) (end 27.84 -13.34) (angle -90) (layer F.Fab) (width 0.1))
      (fp_arc (start 27.08 11.94) (end 27.08 12.7) (angle -90) (layer F.Fab) (width 0.1))
      (fp_arc (start -3.2 11.94) (end -3.96 11.94) (angle -90) (layer F.Fab) (width 0.1))
      (fp_arc (start -3.2 -13.34) (end -3.2 -14.1) (angle -90) (layer F.Fab) (width 0.1))
      (fp_arc (start 5.334001 -0.381001) (end 5.842 -0.762001) (angle -286.3) (layer F.SilkS) (width 0.12))
      (fp_arc (start 5.334002 0.380998) (end 5.842001 -0.000002) (angle -286.3) (layer F.SilkS) (width 0.12))
      (fp_arc (start 5.334 -1.143) (end 5.334 -1.778) (angle -233.1) (layer F.SilkS) (width 0.12))
      (fp_arc (start 5.334002 1.142997) (end 5.334002 1.777997) (angle 233.1) (layer F.SilkS) (width 0.12))
      (fp_text user %R (at 12.3952 0) (layer F.Fab)
        (effects (font (size 1 1) (thickness 0.15)))
      )
      (fp_arc (start -3.2 -13.34) (end -3.2 -14.21) (angle -90) (layer F.SilkS) (width 0.12))
      (fp_arc (start -3.2 11.94) (end -4.07 11.94) (angle -90) (layer F.SilkS) (width 0.12))
      (fp_arc (start 27.08 -13.34) (end 27.95 -13.34) (angle -90) (layer F.SilkS) (width 0.12))
      (fp_arc (start 27.08 11.94) (end 27.08 12.81) (angle -90) (layer F.SilkS) (width 0.12))
      (pad A2 thru_hole circle (at 2.54 5.1 180) (size 2 2) (drill 1.1) (layers *.Cu *.Mask))
      (pad 14 thru_hole circle (at 17.74 8.9 180) (size 4 4) (drill 2.1) (layers *.Cu *.Mask))
      (pad 12 thru_hole circle (at 25.34 8.9 180) (size 4 4) (drill 2.1) (layers *.Cu *.Mask))
      (pad 11 thru_hole circle (at 15.2 -8.9 180) (size 4 4) (drill 2.1) (layers *.Cu *.Mask))
      (pad A1 thru_hole roundrect (at 2.54 -5.1 180) (size 2 2) (drill 1.1) (layers *.Cu *.Mask) (roundrect_rratio 0.25))
      (model ${KISYS3DMOD}/Relay_THT.3dshapes/Relay_SPDT_RAYEX-L90S.wrl
        (at (xyz 0 0 0))
        (scale (xyz 1 1 1))
        (rotate (xyz 0 0 0))
      )
    )

Re: ESPHome

#142

Post by Larrikin »

WhyNotHugo wrote: post #116
balloob wrote: post #28

One of the people leading ESPHome here. Let me know if there any questions. Last Saturday we announced that ESPHome is now owned by the Open Home Foundation. The Open Home Foundation fights for privacy, choice, and sustainability for smart homes. And for every person who lives in one. Learn more at https://www.openhomefoundation.org/blog/announcing-the-open-...

I want to connect a temperature sensor to an esp, and trigger a radiator valve based in temperature range. Valves are mostly zigbee. Can I somehow control one with ESPHome without Home Assistant or zigbee2mqtt? I want to understand if I can avoid adding a full blown Linux server into the equation.

Why do you want to avoid Home Assistant? From what I've found setting up my automations is that once you have it doing something useful you find you have a lot of ideas to further make your life better. I might be wrong but I suspect you'll spend a lot of time doing something that is simple in HA only then find you want to do something else similar.

Re: ESPHome

#143

Post by ianburrell »

tomashubelbauer wrote: post #67
shifto wrote: post #64

Earlier quoted context omitted.

Not to be pedantic but it's ESPhome not ESPinthemiddleofnowhere. There are other solutions for far away sensors.

There is a very real band which one could call ESPgarden where it is not worth setting up LoRa or similar because the Wi-Fi can just about make it, but not quite to be reliable. I've found success with Wi-Fi extenders which aren't very good, but are just good enough to be able to be able to let some of my garden reach the network.

There is BLE Long Range (also called Coded PHY) which is Bluetooth with range of 1km. I bet that would be perfect for outdoor sensors. Longer range and lower power than Wifi, and Bluetooth ecosystem.

I couldn't find any devices that support it yet.

Re: ESPHome

#144

Post by londons_explore »

mairusu wrote: post #68
balloob wrote: post #28

One of the people leading ESPHome here. Let me know if there any questions. Last Saturday we announced that ESPHome is now owned by the Open Home Foundation. The Open Home Foundation fights for privacy, choice, and sustainability for smart homes. And for every person who lives in one. Learn more at https://www.openhomefoundation.org/blog/announcing-the-open-...

I have one! ESPHome is awesome but I'm trying to steer away from Wifi IoT - a big reason is that I like the idea of self-healing meshes that can work entirely offline, without having to deal with a lot of configuration. Espressif seems to have a few devices with ZigBee capabilities, think there will be a way of building our own ZigBee device in the future?

ESP devices have support for sending raw wifi packets, so you can implement your own mesh protocol if you like.

They have software support for both wifi and bluetooth meshing as well.

Re: ESPHome

#145

Post by cyberax »

epcoa wrote: post #126
cyberax wrote: post #120

Earlier quoted context omitted.

RS-485 is a shared bus, so you need to use some kind of a protocol to arbitrate access, and to make sure you don't flash unintended devices. BACnet is one example, but other protocols can work too.

https://esphome.io/components/modbus_controller.html

It doesn't allow firmware updates over modbus. The same would also apply to Zigbee.

Re: ESPHome

#146

Post by francis_t_catte »

hacknewslogin wrote: post #136

Is this a good time to ask about a project I would like to do? I have two 220v heaters in my garage, one on each floor. I'd like to turn one or both of them on from my phone. I'd also love temp sensors near each of them. So far I haven't found a good FOSS option to control a 220v 40A relay. Any suggestions what to use or how to set it up would appreciated.

Use something like an Aube RC840T-240; it generates an isolated 24vac supply and has an isolated normally-open 24vac input for closing the contactor. Using anything else is liable to cause life-threatening spiciness if something goes wrong.

I use one for my addition's electric baseboard heat, and control it with a standard dry contact thermostat, but you could easily use a mosfet or relay controlled by an ESP32 or similar instead.

Re: ESPHome

#147

Post by tredre3 »

Asmod4n wrote: post #36
lostlogin wrote: post #21

Earlier quoted context omitted.

I agree with everything here, except the $10 of hardware. You must be running some very fancy chips! For extra savings the ESP8266 might be as low as $4us. It really is amazing.

Or you could buy a rpi2040 for 99 cents.

Plus the 99 cents for flash chip.

Plus the 99 cents for the PCB.

Plus the 99 cents for misc parts like regulator and caps.

Plus the $4 for the wifi module.

Re: ESPHome

#148

Post by tredre3 »

noisy_boy wrote: post #107

I have a pet project I have been meaning to work on: 1. Lookup the local transport API to see bus arrival timings for the stop near my home 2. Display the timings for three main buses so that can either be a bigger display or three smaller displays, one for each bus. Don't have to be high res but relatively larger and bright e.g. a 7 segment display (3 segments for bus number and 4 for showing arrival time in mins) -…

Since you're (seemingly) already familiar with Arduino, just use that as your framework. You can program the ESP32 in Arduino and access any library you're familiar with as well as handle Wifi.

You can buy an RGB matrix on Adafruit and they sell esp32 boards that can drive them directly,so it's essentially plug and play, no hardware knowledge necessary.

If you prefer to DIY but still need some guidance, check out this project that documents both hardware and software to achieve something similar to what you want to do (cool looking wifi-connected text display):

https://github.com/BlueAndi/esp-rgb-led-matrix

Re: ESPHome

#149

Post by kkielhofner »

tbyehl wrote: post #131
kkielhofner wrote: post #71

Earlier quoted context omitted.

I am a VERY low-effort hardware person (even soldering is um, not my favorite) but for years my approach has been: 1) Go to Amazon and buy a three pack of ESP32 dev boards with headers[0]. They're always some random seller, etc but I've probably had one DoA/failure after buying dozens from random sellers over the years. 2) Get a dupont wires variety pack[1]. 3) Optionally (but good to have) get some breadboards [2].…

As a fellow lazy hobbyist, I'm gonna suggest that buying the cheapest ESP32 / -C3 / -C6 boards can be a poor value. The cheap ones are often > 25.4mm wide so on a single standard breadboard the pins are only accessible on one side[0]. Also having recently been fighting CircuitPython running out of memory parsing a ~35KB response from a web service, boards with some PSRAM are real nice to have. And speaking of Circuit…

Fair points but with all due respect completely misses the point and context. My comment was a reply to a new user interested in esphome on a post about esphome.

You're talking about CircuitPython, 35KB web replies, PSRAM, UF2 bootloader, etc. These are comparatively very advanced topics and you didn't mention esphome once.

The comfort and familiarity of Amazon for what is already a new, intimidating, and challenging subject is of immeasurable value for a novice. They can click those links, fill a cart, and have stuff show up tomorrow with all of the usual ease, friendliness, and reliability of Amazon. If they get frustrated or it doesn't work out they can shove it in the box and get a full refund Amazon-style.

You're suggesting wandering all over the internet, ordering stuff from China (or Amazon for roughly 3x the cost of what I suggested), multiple vendors, etc while describing a bunch of things that frankly just won't matter to them. I say this as someone who has been an esphome and home assistant user since day one. The approach I described has never failed or remotely bothered me and over the past ~decade I've seen it suggested to new users successfully time and time again.

In terms of PSRAM to my knowledge the only thing it is utilized for in the esphome ecosystem is higher resolution displays and more advanced voice assistant scenarios that almost always require -S3 anyway and are a very advanced, challenging use cases. I'm very familiar with displays, voice, the S3, and PSRAM but more on that in a second...

> live with one less LX7 core and no Bluetooth

I'm the founder of Willow[0] and when comparing Willow to esphome the most frequent request we get is supporting bluetooth functionality i.e. esphome bluetooth proxy[1]. This is an extremely popular use case in the esphome/home assistant community. Not having bluetooth while losing a core and paying more is a bigger issue than pin spacing.

It's also a pretty obscure board and while not a big deal to you and I if you look around at docs, guides, etc, etc you'll see the cheap-o boards from Amazon are by far the most popular and common (unsurprisingly). Another plus for a new user.

Speaking of Willow (and back to PSRAM again) even the voice assistant satellite functionality of Home Assistant doesn't fundamentally require it - the most popular device doesn't have it either[2].

Very valuable comment with a lot of interesting information, just doesn't apply to context.

[0] - https://heywillow.io/

[1] - https://esphome.io/components/bluetooth_proxy.html

[2] - https://www.home-assistant.io/voice_control/thirteen-usd-voi...

Re: ESPHome

#150

Post by ku1ik »

I love ESPHome! I turned my dumb standing desk into a smart desk with it (amongst dozen other things).
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